工矿自动化

Design and Implementation of Network Control and Management System Based on J2EE

YANG Jun-rui~, TANG Li-zhen~, DU Jian~

2004, 30(6): 1-4.

<Abstract>(44)

Abstract:
The network intelligent systems are emerging in automatic coal enterprises. How to control and manage those systems efficiently, this paper presented a solution using the J2EE criterions about server program to realize a remote upload mechanism based on the TCP/IP protocol and designed a thread pool from the thinking of pooling-resource to guard the knowledge file from network in real time.

Countermeasure of Graphics Display of Monitoring and Control Software Based on Web-SVG

LIU Xiao-jie~, FAN Xin-qiang~

2004, 30(6): 4-6.

<Abstract>(34)

Abstract:
By analying basis structure of monitoring and control software and its requirement of manmachine interface, and combining with criterion of SVG, the paper presented the countermeasure of graphics display of monitoring and control software based on SVG.

Fault Detection Techniques of Distribution Net Based on Conditional Probability

ZONG Jian, ZHANG Xin, MU Long-hua

2004, 30(6): 7-8.

<Abstract>(27)

Abstract:
As the distribution lines get fault, the fault point must be located between two adjacent load switch. This paper analysed the single sequence of load switch, which gets by SCADA system, to detect the fault place. Based on fault probability, a method of fault detection was proposed, according to the maximum fault probability to decide the fault location. Examples were given to verify its correctness.

Establishment of Soft-sensing Model for Coke Temperature

WANG Xue-wu~, TAN De-jian~

2004, 30(6): 9-12.

<Abstract>(75)

Abstract:
Aiming at the difficulty in measuring the temperature of coke,soft-sensing method was applied to solve this question,after the regressing equation model,the BP network model and the RBF network model were established,and the simulation results were analyzed and compared,practicability of this method was proved.

Study on a New Type of Resonant DC Link Converter

CAO Ji-jun, PAN Ting-long

2004, 30(6): 12-14.

<Abstract>(41)

Abstract:
A new type of converter was proposed based on the analysis of various resonant circuits.By changing the topology of traditional circuits,it can constantly regulate the initial current of resonant inductance in (every) period according to the change of load’s current. So both zero crossing failure and voltage overshot were solved.

Study on Motion Detection Technique in Intelligent Video Monitoring and Control System

OU Yang, LIU Yuan-xiang

2004, 30(6): 15-17.

<Abstract>(33)

Abstract:

Development of OPC Data Access Server

FU Chun-xia, DUAN Jian-mi

2004, 30(6): 17-20.

<Abstract>(37)

Abstract:

Application of Distributed Data Mining System in Prodution Dispatching of Coal Preparation Plant

GAO Li~, WANG Qing-li~, YU Hong-zhen~

2004, 30(6): 21-22.

<Abstract>(38)

Abstract:
Based on the characteristics of coal preparation plant, horizontal data mining model and vertical data mining model were built in this paper. Also, it presented a distributed data mining system, which solved the problem of difficulty on data querying in dispatching. Data mining technology can process information more efficiently.

Design and Implementation of Network Monitoring and Control System for Sluice Gate Statio

WANG Ping, LIN Shan-ming, LIU Yu-hong, CHEN Xiao-lian

2004, 30(6): 23-26.

<Abstract>(54)

Abstract:
The paper discussed the design and implementation of network monitoring and control system for sluice gate station. On the basis of original analogue system, it used embedded video server AXIS2400 to form remote network monitoring and control system by network interconnection, which realized remote monitoring and control for sluice gate station.

DSP-based Monitoring of Electric Parameters and Analysis of AC Harmonic Signal of Power Network of High-power Device

LI Wen-wei~, PENG Jian-hui~

2004, 30(6): 26-29.

<Abstract>(58)

Abstract:
Because of three-phase unbalanced bearing power,the accuracy of AC harmonic analysis and electric parameters monitoring is very important for control strategy of reactive power compensation. Taking TMS320F240 DSP as the system’s microprocessor, the system for analysis of AC harmonic and monitoring of electric parameters of power network of high-power device was developed. The paper introduced the functions of the system in details, and placed emphasis on the structure of soft hardware taking DSP as single-CPU and a new type of data acquisition system(DAS)-MAX125 as the A/D converter and synchronizing AC sample.

Remote Monitoring and Control System of Mini Catalyze Reactor-chromatogram Device

WANG Hong-yuan, XIE Zhang-li, YANG Xiao-ying, LIN Xi-ping

2004, 30(6): 29-31.

<Abstract>(34)

Abstract:

Development of New Definite-loading Control System of Hoist

XU Xiao-feng~, ZHOU Zhi-ren~

2004, 30(6): 32-33.

<Abstract>(45)

Abstract:
Aiming at the problems lying in hoist’s load control system of mine, the paper presented a new definite-loading control system of hoist. It utilized hydraulic press transducer and adopted PLC as the core of the system, which realized no electrical quantity at measure point. In the design process, the essential safety and self-diagnostic functions of the system were fully considered, which solved the defect of low reliability in similar system at a certain extent. This system gains good effect in practical application, and can satisfy the demand of long-time running underground mine.

Implementation of Multi-computer Communication Protocols of Distributed Telecontrol and Telemetry System

ZHAI Bo-ju, YANG Yu-xiang

2004, 30(6): 34-35.

<Abstract>(40)

Abstract:

Realize Identity and Uniqueness of RTU Remote Control Unit Based on CPLD

ZHANG Xiao-li, NI Yun-feng, WANG Long

2004, 30(6): 36-38.

<Abstract>(26)

Abstract:

Web-based Real-time Monitoring and Control System of Electric Power Supply Network Underground Mine

ZHENG Xiao-tian~, ZHENG Feng-long~, ZHAO Xi-hong~, LIU Ming-hui~

2004, 30(6): 39-40.

<Abstract>(40)

Abstract:
A Web-based real-time monitoring and control system of electric power supply network underground mine was introduced. Its realizing principle and structure were explained. The function and realizing method of system’s software and hardware were put into emphasis. From Internet/Intranet, the running state of high-voltage switch can be monitored and on-off of high-voltage switch can be controlled by monitoring and control terminal on surface.

Design of Fuzzy Inference Machine in Fault Diagnosis Expert System of Electromechanical Equipment

WU Fan~(1, YAN Ning~(2, ZHANG Zhi-li~(3

2004, 30(6): 41-44.

<Abstract>(24)

Abstract:
The design method and inference controlling way of fuzzy inference machine in electromechanical equipment were discussed by using fuzzy theroy and fuzzy inference method. Non-definite problems caused by knowledge’s fuzziness of the equipment were solved effectively. Condition monitor and fault diagnosis of the (equipment) were achieved efficiently.

An Intelligent Temperature-control Instrument Applied in Technics of Metal Heat Treatment

ZHOU Zhong-yi, CHEN Lan-ping, XIE Zhang-li

2004, 30(6): 44-46.

<Abstract>(28)

Abstract:

Design and Application of Harmonic Compensation of Power Network in Mine

LIU Jian-gong, LIU Yang

2004, 30(6): 47-49.

<Abstract>(32)

Abstract:

Reform of Switch with Double-fan and Double-power and Its Applicatio

CHEN Kai, LIU Zi-cheng, YANG Shao-hua